Compare 661987 vs 662261
| Property | 661987 | 662261 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6619871 | 6622611 |
| Prime factorization | 661987 | 662261 |
| Divisors count | 2 | 2 |
| Divisors | 1, 661987 | 1, 662261 |
| Number of properties | 5 | 4 |
| Additive primes | 20970th | 20977th |
| Chen primes | 21009th | |
| Isolated primes | 42127th | 42144th |
| Primes | 53716th | 53735th |
| Sexy primes (1st member) | 11599th | 11601st |
| Roman numberals | ||
| Base 2 | 101000011001111000112 | 101000011010111101012 |
| Base 3 | 10201220020013 | 10201221100123 |
| Base 4 | 22012132034 | 22012233114 |
| Base 5 | 1321404225 | 1321430215 |
| Base 6 | 221044316 | 221100056 |
| Base 7 | 54246647 | 54255357 |
| Base 8 | 24147438 | 24153658 |
| Base 9 | 12180619 | 12184059 |
| Base 10 | 66198710 | 66226110 |
| Base 11 | 4123a711 | 41262611 |
| Base 12 | 27b11712 | 27b30512 |
| Base 13 | 1a241113 | 1a259213 |
| Base 14 | 13336b14 | 1334c514 |
| Base 15 | d122715 | d135b15 |
| Base 16 | a19e316 | a1af516 |